Invasive species are everywhere

Invasive species are a significant threat in the United States. Native species, native habitats, commercial agriculture even recreation are at risk. The following reviews some of the better known invaders.

Invasive species are a significant threat to native species, native habitats, commercial agriculture even recreation is at risk. Cost from the effects and efforts to control the over 50,000 non-native species in the United States exceed $120 billion a year. Learn more about the impact from invasive species where you live.

An Iranian military observation aircraft flew within 50 yards of an armed U.S. Navy helicopter over the Persian Gulf this month, sparking concern that top Iranian commanders might not be in full control of local forces, CNN has learned.